Blade-feathering mechanism for propellers and the like.



INVENTDR BLADE FBATHEBING MEOHANISM FUR PBOPELLBES AND THE LIKE.

MTNESS @mAH/Wwf H. HUCKEL.

BLADE FEATBBRING MBCHANISMv PoR PRoPELLBRs AND THB LIKE. PPLIUATION FILED TERZI, 1908. 974,490, Patented Nov. 1, 1910.

6 SHEETS-SHEET 2.

WITNESSES ,hh/ENTE, f 5, ,/,W

(51? -ATVD R H. HUCKEL.

BLADE FBATHBRING MBGHANISM FOR PROPELLERS AND THE LIKE.

APPLICATION FILED 12.21, loos.

974,490. Patented Nov. 1, 1910.

6 SHEETS-SHEET 3.

-ATVD RJEYS H. HGKEL.

BLADE FEATHERING MEGHANISM FOR PROPELLERS AND THE LIKE.

i APPLICATION FILED PBB.21, 1008. 974,490, Patented Nov. 1, 1910.

6 BHEETS-SHEBT 4.

H. HGKBL.

BLADE FEATHERING MEOHANISM POR PROPELLERS AND THB LIKE. APPLIOATION FILED PEB.21, 198.

974,490. Patented Nov. 1, 1910.

6 SHEETS-SHEET 5.

*WSR Evi-1 H. HCKEL.

BLADE PBATHBRING MBOHANISM FOR PROPBLLBRS AND THE LIKE.

APPLICATION FILED FBB.21, 1908. 974,490 Patented Nov. 1, 1910.

6 SHEETS-SHEET 6.

WITNESSE INVENTDR frm-E1 v a@ HUGO HCKEL, Ol" NEUTITSCHEIN, AUSTRIA-HUNGARY.

BLADE-FEATHERING MEHANISM FOB PROPELLERS AND THE LIKE.

Speeication of Letters Patent.

Patented Nov. 1, 1910.

Application led February 21, 1908. Serial No. 417,063.

To all whom 'it may comem:

Be it known that I, HUGO HCKEL, enineer, a subject of the Austro-Hungarian m eror, residing at 36 Landstrasse, Neutitsc ein, Austria-.Hungary, haveinvented certain ,new and "'seful Improvements in Blade-Feathering Mechanism for Propellers and the Like;and'I-do hereby declare the following to bef'a'full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap'- vpertains to make and use the same.

.This invention relates to a device with rotating blades which can be used as a prop eller, a fan or a motor and wherein two 4 similar and symmetrically arranged blades rotate with the same velocity but in opposite directions in such a manner thatduring the operative half of the circular motion the blades are substantially at right angles to the direction of motion of the liquid or gas,

while during the other half they remain substantially tangential to the circle of motion .and so oil'er the least resistance.

According to the present invention the blades are controlled by means of a chain wheel mounted on the axis of the blade and rotating with it, which wheel is connected by a chain with a second cha-in wheel arranged near the shaft around whichl the blades.revolve and connected with the shaft by a crank or similar device; This arrangement is simpler than the planetary gearing and allows of a greater exactness of the tan- 'gential or radial position of the blade.

Moreover'the blades can be arranged in pairs around each shaft, the centrifugal force thus being increased.'

'In the accompanyin drawing, in which the same reference c aracters denote the same parts throughout the views, Figure 1 is a front elevation of a device constructed in accordance with the invention, the different positions of one of the blades being indi-4 cated in dotted lines, Fig. 2 is 'a top plan view of the device, Fig. 3 is a longitudinal 'section through one of the shafts about which the blades rotate, showing the mechanism connecting theblades with said shaft in order to feather the former, Fig. 4 is a ig. 4 but showing a modified arig. 5al isa diagrammatic view similar to rangement,

showing the operation of the'device, Fig. 6 is a' detail horizontal section through the p arts shown in Fig. 5, Figs. 7 and 8 are sectional views of a still further modified form of the device, Fig. 7 being taken on line D.-D of Fig. 8, and Fig. 8 being a longitudinal section through the main shaft, Fig. 9 is a section of the device shown in Figs. 7 and 8 taken on the line A--A of Fig. 10, Fig. l0 is a top plan view of Fig. 9, also s howlng sections of the device taken on the lines B-B, C-C vof said plan view, and Figs-11 and 12 are diagrams showing the operation of this last form of the mechanism.

The chain Wheels b fixed to the shafts M on each side of the frame are driven by the motor a thus causing the fra-mes c which are also fixed to these shafts to rotate. The blades are journaled inthe frame c inthe' manner shown in Fi 3. To each blade is fixed a chain-whee K'in gear with a corresponding chain -wheel la on .the shaft M. The ratio of these two chain wheels i's preferably l :2,\ the wheel K being the larger. On each chain wheel la is a crank L4 which, as seen in Fig. 4 is guided at one end in a slot d in the framework. Instead of using cranks .LS cranks L journaled in the'rame and guided in a slide mounted on the chain whee k may be used, as shown in Figs. 5 and 6. The center of the small chain wheel la is as near as ossible to the axis of the shaft M so that t e crank canbe ver short. On this account it is possibleI to inc ose the crank together with the chain wheel in a casing e, constituting the end of shaft M and ving openings l for the assa e of the chain connecting t e chain-w eels k. Thus itis possible to extend the shaft from one end to the other and to require gearing at one end onl (Fig. 3

Fi 5lL is a oscil ation of the crank, which is 120. The

full line in the circle is the lowest position' of the crank and the dotted line the highest position.

Thev oscillation of the chain wheel 10,'

which in Figs. 1- 6 is not exactly co-axial with the shaft M, can also be effected` byy avoiding .the circular motion resulting from this eccentric position b mounting' the chain wheel co-axially wit shaft M. vSuch a construction is shown in Figs. 7 and 8,

wherein the crank L1 is connected with the lagram sliowing the angular-` chain wheel k1 which is in gear with the chain wheel K1, while the crank L2 is connected with the chain Wheel k2 which drives the wheel K2. The cranks are moved in the manner shown in Figs. 9 and l0, a crank L8 being connected with the shaft M and controlling the cranks L1 and L2 by the aid of rods 1, 2 and i3 through the cross head Z guided in a straight guide. Figs. -11 and 12 show the cross-head and cranks at the two ends of the stroke of the crank L3.

The crank L1 is fixed to a sleeve N1 (Fig. 8) and this sleeve has keyed to its inner end the gear k1. The crank L2 is iXed to the sleeve N2 located Within the sleeve N1 and carrying at itsv inner end the gear k2. The crank L3, which is the operating crank, is carried by a spindle N3, keyed at lts inner end, as shown at n2, to the blade-carrying frame in order to rotate the same. The crank L2, which is xed to the frame, rotates with it and actuates by meansyof the rod i3, the cross-head l, ,and thisv in turn actuates the rods 1 and 2. These rods 1 and 2 transmit to the cranks L1 and L2 a movement of oscillation by means of Which the blades are feathered.

I claim l. In mechanism such as described, the combination of a revolving frame having a shaft, a blade journaled 1n the outer portion of the frame and carrying a gear, a driving gear carried by the frame, a chain connecting said gears, and an operative connection between the shaft and the driving gear embodying acrank driven by the rotation of the shaft.

2. In mechanism such as described, the combination of a revolvin frame having a shaft, a blade journaled 1n the outer portion of the frame and carrying a gear, a driving gear, a` chain connecting said gear with the gear on the blade, a crank to rotate said driving gear, and means connectingl said crank with the shaft whereby the ro tation of the latter causes the proper movement of the crank to feather the blade as the frame revolves. s

In testimony whereof I have afiixed my signature, in presence of two witnesses. HUGO HUCKEL.

Witnesses:

ROBERT W. HEINGARTNER, AUGUST FUGGER. 

